63mm Boring Bar MTUN for TNMG Indexable Inserts 93° Cut Angle, 350mm Overall Length - Teknik Makina

Benefit from the combination of robust shank stability and reliable TNMG insert compatibility to maintain consistent turning quality and machine uptime. Order the component directly via Metav Werkzeuge or consult our specialists for process alignment and rapid supply.

MTUN boring bar — S50U MTUNL left‑hand, for TNMG indexable inserts (Teknik Makina)

The MTUN boring bar is a left‑hand external turning tool designed for use with TNMG 1604 indexable inserts, engineered to provide stable performance in lathe turning operations where rigidity and repeatable insert seating are required.

• Left-hand cutting direction
• For TNMG 1604 indexable inserts
• Shank diameter 50 mm, Ø63 mm body
• Overall length 350 mm
• ISO designation S50U MTUNL

Stable clamping and vibration control for consistent cuts

A solid shank and compact body reduce chatter and improve surface finish in manual and CNC turning operations. The combination of a 50 mm shank and Ø63 mm body provides high bending stiffness, which helps resist deflection under load. With an overall length of 350 mm and a mass of 5.15 kg, the tool maintains inertial stability that supports steady cutting conditions and predictable tooling behaviour. These design choices translate into fewer rework cycles and a more constant part quality when the set‑up is matched to machine capabilities.

Fast insert changes and precise cutting geometry

Designed to accept TNMG 1604 indexable inserts, the MTUN geometry secures repeatable seating and simple replacement, minimising downtime during tool changes. The bar carries the ISO designation S50U MTUNL, indicating the standardised shank and mounting form for straightforward integration into existing setups. A 93° cut angle and 65 mm cutting height are implemented to balance clearance and cutting engagement, allowing effective chip flow with commonly used TNMG grades. The standardised interface reduces setup time and supports predictable cutting behaviour across batches.

Operational advantages and workshop integration

Left‑hand orientation suits applications where reverse‑direction turning is specified or where tooling layouts require a left‑hand approach. The robust S50U configuration is compatible with standard heavy‑duty toolholders and is suited for rigid clamping arrangements. Specifying this bar simplifies inventory management by pairing a proven shank format with widely available TNMG inserts. For specification matching or to verify compatibility with a particular clamping system, technical staff at Metav Werkzeuge provide guidance and data to ensure correct integration into the production cell.

For specification matching, delivery options and process advice on the Teknik Makina MTUN boring bar (S50U MTUNL, K526TM), contact Metav Werkzeuge in Emmerich via info@metav-werkzeuge.com or call +49 2822 7131930 for tailored assistance and prompt dispatch

Technical data

• Article number: K526TM
• Manufacturer: Teknik Makina
• Product: MTUN for TNMG indexable inserts (bezeichnung_2_en)
• ISO designation: S50U MTUNL
• Cutting direction: left

Core specifications

• Shank diameter: 50 mm
• Body diameter: 63 mm
• Overall length: 350 mm
• Cutting height: 65 mm
• Weight: 5.15 kg
• Cut angle: 93°
• Compatible insert: TNMG 1604

Design & features

• Left‑hand boring bar design
• S50U MTUNL shank designation
• Compatible with TNMG 1604 indexable inserts
• Robust mass for stable turning

FAQ

Which inserts fit this boring bar?
The MTUN boring bar is specified for TNMG 1604 indexable inserts; the seating and clamp geometry are matched to that insert format.

What is the shank diameter and does it suit heavy‑duty holders?
The tool has a 50 mm shank and a Ø63 mm body, designed for rigid clamping and heavy‑duty holder compatibility; check the holder specification against the ISO designation S50U MTUNL.

Is the cutting direction left or right?
This bar is configured for left‑hand cutting direction as stated in the technical data and is intended for operations requiring a left‑hand approach.

What is the overall length and how does that affect stability?
The overall length is 350 mm; the moderate overhang together with the bar mass (5.15 kg) improves bending resistance and reduces vibration compared with longer, lighter bars.

How does the 93° cut angle influence machining?
A 93° cut angle provides a practical compromise between clearance and tool engagement, helping controlled chip flow and consistent surface finish when paired with appropriate TNMG inserts.

Manufacturer: Teknik Cutting Tools, Buyukkayacık OSB Mah.422 Nolu Sokak.No:9, Selcuklu/KONYA/TURKEY / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; eMail: info@metav-werkzeuge.com